Which laser hair removal system works best? No single laser is best for all skin types. The goal is for the laser energy to be absorbed by the melanin in the root of the hair. Dark skin requires a longer wavelength so that the laser energy can bypass the melanin on the surface of the skin, being absorbed by the root only. The laser that has been evaluated in a peer reviewed medical study and deemed most effective on darker skin is the long pulsed ND Yag.